Medical identification of lumbar spondylolysis among flight crew between PLAAF and USAF:an empirical study / 军事医学

Objective To improve the selection of flying cadets of the Air Force of People′s Liberation Army of China ( PLAAF) by analyzing the differences of medical identification of lumbar spondylolysis between PLAAF and the US Air Force ( USAF) .Methods Flight crew who had been checked for lumbar spondylolysis during hospitalization at the Air Force General Hospital between 2013 and 2015 were chosen.The results of their medical identification were compaired according to PLAAF and USAF Medical Standards Directory, and their differences and possible reasons were analyzed accordingly.Results The qualified rate of PLAAF was about 85%, which was very close to the standards of USAF, but the difference was not of any statistical significance(P>0.05).Conclusion The standards of our medical identification of lumbar spondylolysis was similar to those of USAF, suggesting that the selection of flying cadets can be improved.

A Study on the Physical Environment in the Cockpit of Air-transportation Airplane

BACKGROUND: The physical environment (noise, temperature & humidity, microwaves, and jet lag) in the cockpit of air-transportation airplane is well known to have adverse effects on flight crew. But due to airplane security reasons and so on, the true environment could not be fully assessed up to now. The object of this study was to measure the status, to examine the effects of the environment, and to suggest the protection from them. METHODS: The status except jet lag was measured from the first officer seat in the B747-400/ B737-400/500 cockpit at several flight stage (pre-flight, after engine start, take off, climb, cruise, descent). Jet lag was examined through a flight crew schedule for 45 days. RESULTS: Noise level (74-84 dB), humidity (19%), microwaves(well above the caution and dangerous range), and jet lag (not enough to adjust from flight) were measured. The physical environment was examined which had considerable adverse effects on flight crew. CONCLUSION: The flight crew should be aware of the status which increase work load and physical load during flight. They must leave the cockpit as much as possible while they are off duty and be isolated from such status during rest.